Home / 1,330,361.20-1,995,541.80-905,208.40

Finding the Fourth Proportional to 1,330,361.20, 1,995,541.80 and 905,208.40

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Solution

The fourth proportional to 1,330,361.20, 1,995,541.80 and 905,208.40 is: 1,357,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,361.20 : 1,995,541.80 = 905,208.40 : x
  2. Step 2: Convert to fraction form
    1,330,361.20/1,995,541.80 = 905,208.40/x
  3. Step 3: Cross multiply
    1,330,361.20x = 1,995,541.80 × 905,208.40
  4. Step 4: Simplify right side
    1,330,361.20x = 1,806,381,199,911.12
  5. Step 5: Solve for x
    x = 1,806,381,199,911.12/1,330,361.20
  6. Step 6: Final answer
    x = 1,357,812.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.